Cusco Ministry of Culture An intoxicated man in Cusco, Peru, has defaced a historic Inca artifact known as the 12-angled stone. The carved rock is a piece of a wall that once surrounded a historic ...

There's nothing mystical or complicated about a sextant. All it is is a device that measures the angle between two objects. The sextant makes use of two mirrors. With this sextant, one of the ...

If a person stands and looks up at an object, the angle of elevation is the angle between the horizontal line of sight and the object. If a person stands and looks down at an object, the angle of ...